What are the chances I could be pregnant? I'm 38. My last period started 2/8/19. I had protected (well briefly it wasn't) sex 2/16/19. My cycle average is 31 days. And I'm not on the pill. I had extremely light spotting this past Monday and Tuesday but period still hasn't come - like I didn’t even need to use anything. I have taken many pregnancy tests but all are negative. I keep feeling like period is going to start but it hasn't yet. You know, pressure in pelvic area. Usually my period starts a day or two after spotting but it hasn’t yet. What could be going on?

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